Freeciv

Flip open the 11th door on our advent calendar and you'll find Freeciv - an open source game of strategy and empire-building based on Sid Meir's epic Civilization series.

Freeciv has been in active development for 20 years, and the time and effort contributed by its team of volunteers shines through. The turn-based game pits you against AI or human opponents, all battling to become the dominant empire.

Establish cities, create your own military and economy, and spread your influence to conquer the world.

World domination

You'll only be able to see a small part of Freeciv's map at first, but more will be revealed as your units travel and discover new land and oceans.

You have total control over your empire's economic, social and political decisions, and your main aim is to develop your empire and conquer your rivals until yours is the last civilization standing.

If multiple players manage to advance their civilizations to the space age, the first one to launch a spacecraft to Alpha Centurai is declared the winner.

Freeciv is brilliant fun, and thanks to its multiple rulesets and multiplayer support, no two games will ever be the same. Get it free today and start building your empire.